129738115122111 has 48 divisors (see below), whose sum is σ = 203916048729120. Its totient is φ = 81472771457280.

The previous prime is 129738115122101. The next prime is 129738115122131. The reversal of 129738115122111 is 111221511837921.

129738115122111 is a `hidden beast` number, since 1 + 2 + 9 + 7 + 3 + 8 + 11 + 512 + 2 + 111 = 666.

It is not a de Polignac number, because 129738115122111 - 2⁷ = 129738115121983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129738115122101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68746740 + ... + 70608713.

It is an arithmetic number, because the mean of its divisors is an integer number (4248251015190).

Almost surely, 2^{129738115122111} is an apocalyptic number.

129738115122111 is a deficient number, since it is larger than the sum of its proper divisors (74177933607009).

129738115122111 is a wasteful number, since it uses less digits than its factorization.

129738115122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139355561 (or 139355526 counting only the distinct ones).

The product of its digits is 60480, while the sum is 45.

The spelling of 129738115122111 in words is "one hundred twenty-nine trillion, seven hundred thirty-eight billion, one hundred fifteen million, one hundred twenty-two thousand, one hundred eleven".